Our company has a professional R&D team, sophisticated processing equipment, and a complete set of testing procedures to ensure product quality, increase market share, and consolidate our position in the Cold Drawn Hydraulic Cylinder Tube, Cold Drawn Seamless Steel Pipe, Induction Chrome Bar industry. Since our establishment, we have always adhered to the business philosophy of customer first, honesty and trustworthiness, mutual benefit, and market first, giving full play to the advantages of talents and information, continuously improving service levels and quality, and implementing diversified sales methods. We have developed rapidly with good reputation and scientific management, and won the praise of our customers. We will continue to follow the concept of 'science, integrity, fairness, and law-abiding', with a rigorous scientific attitude and modern management, to provide customers with satisfactory and assured products.
St52 Cold Drawn Tube Introduction
WUXI HENGTONG PETROLIC MACHINERY manufactures pre honed tubes, ready to hone tubes, honed tubes, skived and roller burnished tubes, chrome bar, piston rods and high-precision cold-drawn steel tubes, We are well-equipped with 300 ton, 150 ton, 65 ton, 20 ton of cold drawing machine,9 meters CNC boring machines, 20 sets honing machines , one set furnace and advanced quality testing equipment, which combine cold drawn, cold-rolled, heat treatment and traditional machining process.
St52 Cold Drawn Tube Technical Parameters and Details
Application: hydraulic cylinder, pneumatic cylinder, oil cylinder, telescopic cylinder.
Original: Jiangsu, China
Certification: ISO9001.
Material: SAE1020, 20#, ST45, CK45, ST52, E355
Payment term: TT, LC
Delivery date: usually 20 to 40 days.
Packing: packed in bundle, with caps on both ends.
Market: Middle East/ Africa/Asia/South America/Europe/North America
MOQ: Depends on exact size and material.
Mechanical Properties:
Final Supply | Cold finished | Cold drawn and stress-relieved （BK+S or + SR） | Hardness HB | |||
Parameters | T.S | Elongation | T.S | Y.S | Elongation | |
20# (A106B, ST45, E255) | ≧550 | ≧8 | ≧520 | ≧375 | ≧12 | 175 |
45#(CK45) | ≧650 | ≧5 | / | / | / | 207 |
Q345B(ST52, E355) | ≧640 | ≧5 | ≧600 | ≧520 | ≧15 | 190 |
25Mn | ≧640 | ≧5 | ≧600 | ≧510 | ≧15 | 195 |
27SiMn | ≧840 | ≧5 | ≧800 | ≧720 | ≧10 | 230 |
Production process
Raw material – annealing for material of 45#, 27SiMn, 25Mn – Acid cleaning – parkerizing & Saponifying – cold drawn – leveling – saw off bad section – stress relieving – leveling –inspection – oiled plated - packing
Quality control
1. We only buy raw material from famous tube factory, and Checking raw material quality before production.
2. We check the tube ID tolerance, OD tolerance and surface after cold drawn one by one.
To be a high-quality supplier in the world's professional DIN2391 St52 Cold Drawn Precision Carbon Seamless Steel Pipe Tube Made in China industry is our goal. Our company's requirements for ourselves are to develop creativity, optimize processes, control quality, and satisfy customers. In line with the principle of common development with users, our company deeply studies and improves the service and we constantly improve the customer satisfaction with practical actions. There is no end point for success and no limit for surpass.
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